42 SUPPLEMENT ON 



wards, others inwards, downwards, upwards — some are bent 

 back on the body, while others bend forward — some are con- 

 voluted spirally, and others are stiff and inflexible. 



In some the antennae when the insect reposes are hidden 

 under the head or trunk, and in others they are never con- 

 cealed. 



The termination of these antennae is also very various : this 

 termination is sometimes a minute joint, a bristle, a capillary 

 joint, a short point or sinew, a kind of hook, a claw ; some- 

 times it is thicker at the point forming a knot, and sometimes 

 it is divided into laminae, which the insect can open and 

 shut. 



Some antennae are feathered or hairy in various forms, as 

 on both or one side in Avhorls, plumose, or flowing and ciliate, 

 or straight and stiffs. 



Kirby and Spence name no less than thirty-two varieties of 

 general figure and size in these organs. The figures of the 

 several genera will display these varieties, and we insert here 

 some greatly magnified figures of the antennae found in three 

 species of lepidopterous insects, to display their more minute 

 details. Fig. 1, represents the antennae of Pap. lo. 2. The 

 same with a portion of its hairy exterior coat removed. 

 3. The knot or capitulum laid open, displaying the appear- 

 ance of vessels like the pith of elder. 4. A transverse section 

 of a portion of the antennae. 5. The tubular insertion, and 

 6, the same more magnified. 



Fig. 7^ shews a front view of the head of Bomhyx Caja, 

 magnified by the lucernal microscope, with one of the antennae 

 removed. 8. Is part of the antennae seen vertically covered 

 with an imbrication of white scales or feathers, under which 

 the pectens issue on each side. 9- Is one of the antennae 

 entire, with its pectens, and a part of the imbrication of white 

 scales or feathers removed at a to shew the articulations. 10. 

 Is the extremity of the antennae more magnified. 11. Is the 



